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Requests that encl chronology re to Licciardo differing prof view (DPV) concerning isolation valves at plant & listed NRR records pertaining to DPV be made available to public through NUDOCS.

Accession Number: ML19327A642

Date Released: Friday, October 25, 2024

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• ML19327B565 - Requests that encl chronology re to Licciardo differing prof view (DPV) concerning isolation valves at plant & listed NRR records pertaining to DPV be made available to public through NUDOCS. (5 page(s), 10/31/1989)
• ML19327B570 - Discusses R Licciardo 890511 differing prof opinion.Action requested per encl Murley 890913 memo directing NRC to ensure that pressure & temp effects during LOCA cosidered in review of new & advanced fuel designs. (1 page(s), 9/19/1989)
• ML19327A693 - Lists actions needed to be taken re review of 890511 differing prof view,including issuance of evaluation of Zion Tech Specs. (1 page(s), 9/13/1989)
• ML19327A659 - Summarizes activities of standing review panel & provides recommendations re differing prof view submitted on 890511. (102 page(s), 8/31/1989)
• ML19327A672 - "Evaluation of Criteria for & Calculation of Offsite Doses Deriving from Open Containment Purge Valves During LOCA at Zion Units 1 & 2." (77 page(s), 7/20/1989)
• ML19327A663 - Discusses view on purging re plant containment isolation valves. (2 page(s), 8/11/1989)
• ML19327A651 - Forwards N Lauben memo re technical issues raised in DPV concerning containment isolation valves at facilities. Rupture of high burnup fuel pins during blowdown transient not credible for existing fuel designs. (1 page(s), 8/10/1989)
• ML19327A652 - Comments on DPV concerning early blowdown cladding rupture during large break LOCA.Table listing GAPCON pin pressure calculations encl. (12 page(s), 8/10/1989)
• ML19327A673 - Discusses differential professional view re plant purge operation. (3 page(s), 8/10/1989)
• ML19327A664 - Advises that 890811 note providing revised analyses to recognize higher linear heat generation rates for Zion, remain unchanged. (1 page(s), 8/24/1989)
• ML19327A656 - Forwards revised comments from GN Lauben on differing prof view re early blowdown cladding rupture during large break LOCA.Rupture of high burnup fuel pins during blowdown transient not credible for existing fuel designs. (1 page(s), 8/23/1989)
• ML19327A657 - Forwards comments on differing prof view re early blowdown cladding rupture during large break LOCA.Comments address issues re cladding rupture of high burnup high pressure fuel early in blowdown prior to containment isolation. (12 page(s), 8/21/1989)
• ML19327A665 - Forwards response to question addressed in 890822 memo re containment isolation valves. (1 page(s), 8/29/1989)
• ML19327A658 - Informs that author reviewed R Licciardo 890822 memo to F Miraglia re adequacy of N Lauben analysis of LOCA using low burnup,low pressure fuel & which have high LHGR than analyzed by Lauben.Early rupture of fuel pins remains valid. (2 page(s), 8/25/1989)
• ML19327A661 - Discusses differing professional view re issuance of SER to plant allowing full power operation w/open 42" containment isolation valves & methodology use for calculating related offsite doses. (2 page(s), 5/11/1989)
• ML19327A662 - Forwards SER re licensee proposal allowing full power operation of facility w/42 inch purge supply & exhaust containment isolation valves. (3 page(s), 5/11/1989)
• ML19327B588 - Safety evaluation concluding that 42-inch containment purge & supply valves should remain closed in Modes l,2,3 & 4 since consequence of offsite dose to thyroid from iodine during LOCA unacceptably high. (4 page(s), 5/11/1989)
• ML19327A643 - Ack receipt of 890512 ltr containing differing prof opinion re methodology used for calculating related offsite doses. List of persons to be considered as third member of standing review panel requested. (1 page(s), 5/18/1989)
• ML19327A644 - Submits list of nominees for third member of standing review panel,per 890519 request. (1 page(s), 5/25/1989)
• ML19327A666 - Forwards 890511 memo expressing differing professional view of B A Licciardo re containment isolation valves,for review & recommendation by J Miraglia. (1 page(s), 5/26/1989)
• ML19327A641 - Forwards safety evaluation accepting proposed Tech Spec changes re purge/vent operation.Licensee should verify that positive stop installed on valve to prevent opening beyond Tech Spec angle. (2 page(s), 5/10/1989)
• ML19327B595 - Safety evaluation accepting util 860221 proposed amend to Licenses DPR-39 & DPR-48,revising Tech Specs to limit purge & vent valve operation above cold shutdown. (4 page(s), 5/10/1989)
• ML19327A667 - Informs of adequate info being supplied to initiate review by SRP re differing professional view. (1 page(s), 6/2/1989)
• ML19327A647 - Requests notification of when requested info re containment isolation valves w/regard to fuel failure for LOCA analyses, clarification of mechanisms used for transporting fission products & view on safety significance will be provided. (1 page(s), 6/23/1989)
• ML19327A668 - Advises that specific issues identified in 890623 memo would be further clarified by 890717. (1 page(s), 6/30/1989)
• ML19327A669 - Corrected memo advising that 890717 submittal,re clarification of differing prof view,will be provided on 890723. (1 page(s), 7/14/1989)
• ML19327A670 - Advises that info provided by memo dtd 890630 will be submitted by 890720. (1 page(s), 7/14/1989)
• ML19327A671 - Notifies EDO of status re differing professional view filed on 890511.Chronology documents status encl. (3 page(s), 7/21/1989)
• ML19327B596 - Summarizes 890822 telcon from Licciardo re matl provided to Review Panel,by NRC,concerning Licciardo differing prof view on containment isolation valves at plant.Licciardo asked to provide concerns in written form by C.O.B. on 890822. (1 page(s), 8/22/1989)
• ML19327B598 - Advises of apparent fundamental misunderstanding in preparation of document contributing to resolution of differing prof view re containment isolation valves at plant,per 890821 telcon w/W Hodges. (1 page(s), 8/22/1989)
• ML19327B599 - Requests listed clarifying info supporting Standing Committee on Differing Prof Views (DPV) review of Licciardo DPV re containment isolation valves at plant.Info requested by C.O.B. on 890727. (1 page(s), 7/27/1989)
• ML19327A660 - Discusses differing professional view re plant containment isolation valves. (2 page(s), 7/20/1989)